Car Measuring Device - Handheld Ignition-Tachometer Measures revolutions in one-cylinder two-stroke and eight-cylinder four-stroke combustion engines with electric ignition starters. 1.1 m /. 04 in cable with inductive clip to be placed on ignition cable. 6-digit backlit LCD display and flashlight functionality for low-light applications. Durable ABS plastic housing ensures longevity.